CN114114104B - Method and device for determining functional integrity of superconducting magnet - Google Patents
Method and device for determining functional integrity of superconducting magnet Download PDFInfo
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- CN114114104B CN114114104B CN202111400080.6A CN202111400080A CN114114104B CN 114114104 B CN114114104 B CN 114114104B CN 202111400080 A CN202111400080 A CN 202111400080A CN 114114104 B CN114114104 B CN 114114104B
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
- G01R33/1238—Measuring superconductive properties
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
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Abstract
The application discloses a method for determining the functional integrity of a superconducting magnet, wherein the superconducting magnet comprises the following steps in a vibration impact experiment: determining an integrity parameter before superconducting magnet experiment and a current integrity parameter of the superconducting magnet; the integrity parameters comprise the magnetic induction intensity of the magnet, the temperature of a magnetic pole and the vacuum degree of the vacuum cavity; when the ratio of the current integrity parameter to the integrity parameter before the experiment is greater than a preset threshold value, judging that the integrity degree of the superconducting magnet can continuously support the vibration impact experiment; and when the ratio of the current integrity parameter to the integrity parameter before the experiment is smaller than a preset threshold value, judging that the integrity degree of the superconducting magnet cannot continuously support the vibration impact experiment. According to the method for determining the functional integrity of the superconducting magnet, whether the superconducting magnet can continue to perform the vibration impact experiment or not can be judged according to the ratio of the integrity parameter before the superconducting magnet experiment to the integrity parameter after the superconducting magnet experiment.
Description
Technical Field
The application relates to the field of superconduction, in particular to a method and a device for determining the functional integrity of a superconducting magnet.
Background
The superconductive magnetic suspension train realizes the suspension running of the train leaving the ground by utilizing the principle that like poles repel and unlike poles attract. The key component that enables the vehicle to suspend and tow is the superconducting magnet. Under the operation condition of a train, the superconducting magnet can be subjected to certain impact vibration load. Therefore, before practical application, the superconducting magnet needs to be tested for the reliability of its mechanical structure through a vibration impact test.
However, because the superconducting magnet is expensive in manufacturing cost, when the superconducting magnet is used for a vibration impact experiment, the integrity of the superconducting magnet needs to be ensured as much as possible, and the superconducting magnet is prevented from being damaged in an unrepairable manner in the experiment process. Therefore, there is an urgent need in the art for a method capable of evaluating the functional integrity of a superconducting magnet during a vibration impact test, so as to determine whether the superconducting magnet can continue the vibration impact test.
Disclosure of Invention
In order to solve the technical problem, the application provides a method and a device for determining the functional integrity of a superconducting magnet, which are used for judging whether the superconducting magnet can continue a vibration impact experiment.
In order to achieve the above object, the embodiments of the present application provide the following technical solutions:
the embodiment of the application provides a method for determining the functional integrity of a superconducting magnet, wherein the superconducting magnet is used in a vibration impact experiment, and the method comprises the following steps:
determining an integrity parameter before superconducting magnet experiment and a current integrity parameter of the superconducting magnet; the integrity parameters comprise magnetic induction intensity of the magnet, magnetic pole temperature and vacuum degree of the vacuum cavity;
when the ratio of the current integrity parameter to the integrity parameter before the experiment is larger than a preset threshold value, judging that the integrity degree of the superconducting magnet can continuously support the vibration impact experiment;
and when the ratio of the current integrity parameter to the integrity parameter before the experiment is smaller than a preset threshold value, judging that the integrity degree of the superconducting magnet cannot continuously support the vibration impact experiment.
Optionally, the method further comprises:
and calculating correlation coefficients among the magnetic induction intensity of the magnet, the magnetic pole temperature and the vacuum degree of the vacuum cavity according to the integrity parameters of the superconducting magnet.
Optionally, when the correlation coefficient is greater than or equal to a coefficient threshold, and when the ratio of the current integrity parameter to the integrity parameter before the experiment is greater than a preset threshold, determining that the integrity degree of the superconducting magnet can continue to support the vibration impact experiment includes:
when the ratio of the current magnetic induction intensity of the magnet to the magnetic induction intensity of the magnet before the experiment is greater than the magnetic field threshold value, or the ratio of the current magnetic pole temperature to the magnetic pole temperature before the experiment is greater than the temperature threshold value, or the ratio of the current vacuum degree of the vacuum cavity to the vacuum degree of the vacuum cavity before the experiment is greater than the pressure threshold value, judging that the integrity degree of the superconducting magnet can continuously support the vibration impact experiment.
Optionally, when the correlation coefficient is greater than or equal to a coefficient threshold, and when a ratio of the current integrity parameter to an integrity parameter before experiment is smaller than a preset threshold, determining that the integrity degree of the superconducting magnet cannot continue to support the vibration impact experiment includes:
and when the ratio of the current magnetic induction intensity of the magnet to the magnetic induction intensity of the magnet before the experiment is smaller than a magnetic field threshold value, or the ratio of the current magnetic pole temperature to the magnetic pole temperature before the experiment is smaller than a temperature threshold value, or the ratio of the current vacuum degree of the vacuum cavity to the vacuum degree of the vacuum cavity before the experiment is smaller than a pressure threshold value, judging that the integrity degree of the superconducting magnet cannot continuously support the vibration impact experiment.
Optionally, when the correlation coefficient is smaller than a coefficient threshold, and when the ratio of the current integrity parameter to the integrity parameter before the experiment is greater than a preset threshold, determining that the integrity degree of the superconducting magnet can continue to support the vibration impact experiment includes:
and when the ratio of the current magnetic induction intensity of the magnet to the magnetic induction intensity of the magnet before the experiment is greater than the magnetic field threshold value, the ratio of the current magnetic pole temperature to the magnetic pole temperature before the experiment is greater than the temperature threshold value, and the ratio of the current vacuum degree of the vacuum cavity to the vacuum degree of the vacuum cavity before the experiment is greater than the pressure threshold value, judging that the integrity degree of the superconducting magnet can continuously support the vibration impact experiment.
Optionally, when the correlation coefficient is smaller than a coefficient threshold, and the ratio of the current integrity parameter to the integrity parameter before the experiment is smaller than a preset threshold, determining that the integrity degree of the superconducting magnet cannot continuously support the vibration and shock experiment includes:
and when the ratio of the current magnetic induction intensity of the magnet to the magnetic induction intensity of the magnet before the experiment is smaller than the magnetic field threshold value, the ratio of the current magnetic pole temperature to the magnetic pole temperature before the experiment is smaller than the temperature threshold value, and the ratio of the current vacuum degree of the vacuum cavity to the vacuum degree of the vacuum cavity before the experiment is smaller than the pressure threshold value, judging that the integrity degree of the superconducting magnet cannot continuously support the vibration impact experiment.
Optionally, the calculating the correlation coefficient between the magnetic induction intensity of the magnet, the magnetic pole temperature and the vacuum degree of the vacuum chamber according to the integrity parameter of the superconducting magnet specifically includes calculating the correlation coefficient according to the following formula:
wherein, the correlation coefficient among the magnetic induction intensity of the magnet, the magnetic pole temperature and the vacuum degree of the vacuum cavity, B is the magnetic induction intensity of the magnet, T is the magnetic pole temperature, P is the vacuum degree of the vacuum cavity, cov is covariance, and Var is variance.
Optionally, the coefficient threshold is 0.7.
According to the method for determining the functional integrity of the superconducting magnet, the application also provides a device for determining the functional integrity of the superconducting magnet, which is characterized in that the superconducting magnet is used in a vibration impact experiment, and the device comprises:
the determination module is used for determining the integrity parameter of the superconducting magnet before the experiment and the current integrity parameter of the superconducting magnet; the integrity parameters comprise magnetic induction intensity of the magnet, magnetic pole temperature and vacuum degree of the vacuum cavity;
the judging module is used for judging that the integrity degree of the superconducting magnet can continuously support the vibration impact experiment when the ratio of the current integrity parameter to the integrity parameter before the experiment is greater than a preset threshold value; and when the ratio of the current integrity parameter to the integrity parameter before the experiment is smaller than a preset threshold value, judging that the integrity degree of the superconducting magnet cannot continuously support the vibration impact experiment.
Optionally, the method further comprises:
and the calculation module is used for calculating correlation coefficients among the magnetic induction intensity of the magnet, the magnetic pole temperature and the vacuum degree of the vacuum cavity according to the multiple groups of integrity parameters of the superconducting magnet.
According to the technical scheme, the method has the following beneficial effects:
the embodiment of the application provides a method for determining the functional integrity of a superconducting magnet, wherein in a vibration impact experiment, the method comprises the following steps: determining an integrity parameter before superconducting magnet experiment and a current integrity parameter of the superconducting magnet; the integrity parameters comprise magnetic induction intensity of the magnet, magnetic pole temperature and vacuum degree of the vacuum cavity; when the ratio of the current integrity parameter to the integrity parameter before the experiment is greater than a preset threshold value, judging that the integrity degree of the superconducting magnet can continuously support the vibration impact experiment; and when the ratio of the current integrity parameter to the integrity parameter before the experiment is smaller than a preset threshold value, judging that the integrity degree of the superconducting magnet cannot continuously support the vibration impact experiment.
Therefore, the method for determining the completeness of the superconducting magnet function provided by the embodiment of the application can determine the completeness of the superconducting magnet through the ratio of the completeness parameter before the superconducting magnet experiment to the completeness parameter after the experiment, such as the magnetic induction intensity of the magnet of the superconducting magnet, the magnetic pole temperature and the vacuum degree of the vacuum chamber, so as to judge whether the superconducting magnet can continue to perform the vibration impact experiment.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a method for determining the functional integrity of a superconducting magnet according to an embodiment of the present application;
fig. 2 is a flowchart of another method for determining the functional integrity of a superconducting magnet according to an embodiment of the present application;
fig. 3 is a schematic diagram of an apparatus for determining the functional integrity of a superconducting magnet according to an embodiment of the present application.
Detailed Description
In order to help better understand the scheme provided by the embodiment of the present application, before describing the method provided by the embodiment of the present application, a scenario of an application of the scheme of the embodiment of the present application is described.
The superconductive magnetic suspension train realizes the suspension running of the train leaving the ground by utilizing the principle that like poles repel and unlike poles attract. The key component that enables the vehicle to suspend and tow is the superconducting magnet. Under the operation condition of a train, the superconducting magnet can be subjected to certain impact vibration load. Therefore, before practical application, the superconducting magnet needs to be tested for the reliability of its mechanical structure through a vibration impact experiment.
However, because the superconducting magnet is expensive in manufacturing cost, when the superconducting magnet is used for a vibration impact experiment, the integrity of the superconducting magnet needs to be ensured as much as possible, and the superconducting magnet is prevented from being damaged in an unrepairable manner in the experiment process. Therefore, there is an urgent need in the art for a method capable of evaluating the functional integrity of a superconducting magnet during a vibration impact test, so as to determine whether the superconducting magnet can continue the vibration impact test.
In order to solve the above technical problem, the method for determining the integrity of the superconducting magnet provided in the embodiment of the present application may determine the integrity of the superconducting magnet according to a ratio of an integrity parameter before an experiment on the superconducting magnet to an integrity parameter after the experiment, for example, the magnetic induction intensity of a magnet of the superconducting magnet, the temperature of a magnetic pole, and the vacuum degree of a vacuum chamber, so as to determine whether the superconducting magnet can continue a vibration impact experiment.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the drawings are described in detail below.
Referring to fig. 1, the figure is a flowchart of a method for determining the functional integrity of a superconducting magnet according to an embodiment of the present application.
The superconducting magnet in the embodiment of the application is used in a vibration impact experiment. As shown in fig. 1, a method for determining the functional integrity of a superconducting magnet provided by the embodiment of the present application includes:
s101: determining an integrity parameter before superconducting magnet experiment and a current integrity parameter of the superconducting magnet; integrity parameters include magnet magnetic induction, pole temperature, and vacuum of the vacuum chamber.
S102: and when the ratio of the current integrity parameter to the integrity parameter before the test is greater than a preset threshold value, judging the integrity degree of the superconducting magnet and continuing to support the vibration impact test.
S103: and when the ratio of the current integrity parameter to the integrity parameter before the experiment is smaller than a preset threshold value, judging that the integrity degree of the superconducting magnet cannot continuously support the vibration impact experiment.
It should be noted that the embodiments of the present application do not limit the specific indexes included in the integrity parameters, the integrity parameters may only include the magnetic induction of other magnets, the temperature of the magnetic pole, and the vacuum degree of the vacuum chamber, and in order to further determine the method for the integrity of the function of the superconducting magnet, other parameters related to the integrity of the superconducting magnet may also be included.
The integrity parameters required by the method for determining the functional integrity of the superconducting magnet provided by the embodiment of the application can be measured in the process of carrying out the impact experiment on the superconducting magnet. Therefore, the method can be carried out in a vibration impact experiment of the superconducting magnet, so that the integrity of the superconducting magnet can be monitored in real time, and the safety of the superconducting magnet is improved. When the integrity of the superconducting magnet is low, and the superconducting magnet is likely to be damaged greatly by continuing the vibration impact experiment, the vibration impact experiment can be stopped in time, and the superconducting magnet is prevented from being repaired and causing great loss.
It should be noted that, during the impact experiment of the superconducting magnet, the integrity of the superconducting magnet can be determined by comparing the structural integrity before and after the experiment. However, the method does not consider the function of the superconducting magnet, and the accuracy of the completeness of the determination is low. For example, a superconducting magnet may be structurally intact, but the associated function has been destroyed and cannot be used any more, resulting in a large loss. The method provided by the embodiment of the application determines the integrity degree of the superconducting magnet according to integrity parameters, such as the magnetic induction intensity of the magnet, the temperature of the magnetic pole and the vacuum degree of the vacuum chamber, and can functionally determine the integrity degree of the superconducting magnet, so that the usability of the superconducting magnet is ensured.
As a possible implementation manner, the method provided in the embodiment of the present application may further include: and calculating correlation coefficients among the magnetic induction intensity of the magnet, the magnetic pole temperature and the vacuum degree of the vacuum cavity according to the integrity parameters of the superconducting magnet.
When the correlation coefficient is greater than or equal to the coefficient threshold and the ratio of the current integrity parameter to the integrity parameter before the experiment is greater than the preset threshold, determining the integrity of the superconducting magnet in the embodiment of the present application can continuously support the vibration impact experiment, including: when the ratio of the current magnetic induction intensity of the magnet to the magnetic induction intensity of the magnet before the experiment is greater than the magnetic field threshold value, or the ratio of the current magnetic pole temperature to the magnetic pole temperature before the experiment is greater than the temperature threshold value, or the ratio of the current vacuum degree of the vacuum cavity to the vacuum degree of the vacuum cavity before the experiment is greater than the pressure threshold value, judging the integrity degree of the superconducting magnet and continuing to support the vibration impact experiment.
When the correlation coefficient is greater than or equal to the coefficient threshold and the ratio of the current integrity parameter to the integrity parameter before the experiment is less than the preset threshold, the determining that the integrity degree of the superconducting magnet cannot continuously support the vibration impact experiment in the embodiment of the present application includes: when the ratio of the current magnetic induction intensity of the magnet to the magnetic induction intensity of the magnet before the experiment is smaller than the magnetic field threshold value, or the ratio of the current magnetic pole temperature to the magnetic pole temperature before the experiment is smaller than the temperature threshold value, or the ratio of the current vacuum degree of the vacuum cavity to the vacuum degree of the vacuum cavity before the experiment is smaller than the pressure threshold value, it is judged that the integrity degree of the superconducting magnet cannot continuously support the vibration impact experiment.
When the correlation coefficient is smaller than the coefficient threshold and the ratio of the current integrity parameter to the integrity parameter before the experiment is greater than the preset threshold, the determining of the integrity degree of the superconducting magnet in the embodiment of the present application can continuously support the vibration impact experiment, including: when the ratio of the current magnetic induction intensity of the magnet to the magnetic induction intensity of the magnet before the experiment is greater than the magnetic field threshold value, the ratio of the current magnetic pole temperature to the magnetic pole temperature before the experiment is greater than the temperature threshold value, and the ratio of the current vacuum degree of the vacuum cavity to the vacuum degree of the vacuum cavity before the experiment is greater than the pressure threshold value, the judgment of the integrity degree of the superconducting magnet can continuously support the vibration impact experiment.
When the correlation coefficient is smaller than the coefficient threshold and the ratio of the current integrity parameter to the integrity parameter before the experiment is smaller than the preset threshold, the determining that the integrity degree of the superconducting magnet cannot continuously support the vibration impact experiment in the embodiment of the present application includes: when the ratio of the current magnetic induction intensity of the magnet to the magnetic induction intensity of the magnet before the experiment is smaller than the magnetic field threshold value, the ratio of the current magnetic pole temperature to the magnetic pole temperature before the experiment is smaller than the temperature threshold value, and the ratio of the current vacuum degree of the vacuum cavity to the vacuum degree of the vacuum cavity before the experiment is smaller than the pressure threshold value, it is judged that the integrity of the superconducting magnet cannot continuously support the vibration impact experiment.
As an example, the threshold value of the magnetic field in the above-described embodiment may be 1.02, the temperature coefficient may be 1.09, and the pressure drop coefficient may be 1.3. It should be understood that when the correlation coefficient between the magnetic induction of the magnet, the temperature of the magnetic pole, and the degree of vacuum of the vacuum chamber is greater than or equal to the coefficient threshold value, it means that the correlation degree between the magnetic induction of the magnet, the temperature of the magnetic pole, and the degree of vacuum of the vacuum chamber is high.
Referring to fig. 3, the figure is a flowchart of another method for determining the functional integrity of a superconducting magnet according to an embodiment of the present application.
As shown in fig. 3, according to the method for determining the integrity of the superconducting magnet provided by the embodiment of the present application, the integrity of the superconducting magnet can be determined by any one of the integrity parameters. Accordingly, when the correlation coefficient between the magnetic induction of the magnet, the magnetic pole temperature and the vacuum degree of the vacuum chamber is smaller than the coefficient threshold value, it is indicated that the correlation degree between the magnetic induction of the magnet, the magnetic pole temperature and the vacuum degree of the vacuum chamber is low. According to the method for determining the completeness of the superconducting magnet function, the completeness of the superconducting magnet function is judged through all the integrity parameters, namely the completeness of the superconducting magnet can be determined only when all the integrity parameters meet the standard.
As an example, calculating the correlation coefficient between the magnetic induction of the magnet, the temperature of the magnetic pole and the vacuum degree of the vacuum chamber according to the integrity parameter of the superconducting magnet specifically comprises calculating the correlation coefficient according to the following formula:
wherein r (B, T, P) is a correlation coefficient between the magnetic induction of the magnet, the temperature of the magnetic pole and the vacuum degree of the vacuum chamber, B is the magnetic induction of the magnet, T is the temperature of the magnetic pole, P is the vacuum degree of the vacuum chamber, cov is covariance, and Var is variance. Specifically, the coefficient threshold in the embodiment of the present application may be obtained by sorting according to experimental data, for example, the coefficient threshold may be 0.7.
In summary, the method for determining the integrity of the superconducting magnet provided in the embodiments of the present application may determine the integrity of the superconducting magnet through a ratio of an integrity parameter before an experiment of the superconducting magnet to an integrity parameter after the experiment, such as the magnetic flux density of the superconducting magnet, the magnetic pole temperature, and the vacuum degree of the vacuum chamber. Therefore, the method provided by the embodiment of the application can judge whether the superconducting magnet can continue to perform the vibration impact experiment in real time and accurately.
According to the method for determining the functional integrity of the superconducting magnet provided by the embodiment, the embodiment of the application also provides a device for determining the functional integrity of the superconducting magnet.
Referring to fig. 3, the device for determining the functional integrity of the superconducting magnet according to the embodiment of the present application is schematically illustrated.
As shown in fig. 3, an apparatus for determining the functional integrity of a superconducting magnet according to an embodiment of the present application includes:
the determining module 100 is configured to determine an integrity parameter before a superconducting magnet experiment and a current integrity parameter of the superconducting magnet; integrity parameters include magnet magnetic induction, pole temperature, and vacuum of the vacuum chamber.
The judging module 200 is used for judging that the integrity degree of the superconducting magnet can continuously support the vibration impact experiment when the ratio of the current integrity parameter to the integrity parameter before the experiment is greater than a preset threshold value; and when the ratio of the current integrity parameter to the integrity parameter before the experiment is smaller than a preset threshold value, judging that the integrity degree of the superconducting magnet cannot continuously support the vibration impact experiment.
As a possible implementation manner, the apparatus provided in this embodiment of the present application may further include: and the calculation module is used for calculating correlation coefficients among the magnetic induction intensity of the magnet, the magnetic pole temperature and the vacuum degree of the vacuum cavity according to the multiple groups of integrity parameters of the superconducting magnet.
Therefore, the device for determining the functional integrity of the superconducting magnet provided by the embodiment of the application can determine the integrity of the superconducting magnet through the ratio of the integrity parameter before the superconducting magnet experiment to the integrity parameter after the experiment, such as the magnetic induction intensity of the superconducting magnet, the magnetic pole temperature and the vacuum degree of the vacuum chamber. Therefore, the device provided by the embodiment of the application can judge whether the superconducting magnet can continue to carry out the vibration impact experiment in real time and accurately.
As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that all or part of the steps in the above embodiment methods can be implemented by software plus a necessary general hardware platform. Based on such understanding, the technical solutions of the present application or portions contributing to the prior art may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network communication device such as a media gateway, etc.) to execute the method described in the embodiments or some portions of the embodiments of the present application.
It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The method disclosed by the embodiment corresponds to the system disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the system part for description.
It should also be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The foregoing description of the disclosed embodiments will enable those skilled in the art to make or use the invention in various modifications to these embodiments, which will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A method of determining the functional integrity of a superconducting magnet in a vibro-impact experiment, the method comprising:
determining integrity parameters of the superconducting magnet before experiment and current integrity parameters of the superconducting magnet; the integrity parameters comprise magnetic induction intensity of the magnet, magnetic pole temperature and vacuum degree of the vacuum cavity;
calculating correlation coefficients among the magnetic induction intensity of the magnet, the magnetic pole temperature and the vacuum degree of the vacuum cavity according to the integrity parameters of the superconducting magnet;
when the correlation coefficient is larger than a correlation coefficient threshold value and meets any one of first preset conditions, judging that the completeness of the superconducting magnet can continuously support the vibration impact experiment; the first preset conditions comprise that the ratio of the current magnetic induction intensity of the magnet to the magnetic induction intensity of the magnet before the experiment is larger than a magnetic field threshold value, the ratio of the current magnetic pole temperature to the magnetic pole temperature before the experiment is larger than a temperature threshold value, and the ratio of the current vacuum degree of the vacuum cavity to the vacuum degree of the vacuum cavity before the experiment is larger than a pressure threshold value;
when the correlation coefficient is larger than a correlation coefficient threshold value and meets any one of second preset conditions, judging that the completeness of the superconducting magnet cannot continuously support the vibration impact experiment; the second preset condition comprises that the ratio of the current magnetic induction intensity of the magnet to the magnetic induction intensity of the magnet before the experiment is smaller than a magnetic field threshold value, the ratio of the current magnetic pole temperature to the magnetic pole temperature before the experiment is smaller than a temperature threshold value, and the ratio of the current vacuum degree of the vacuum cavity to the vacuum degree of the vacuum cavity before the experiment is smaller than a pressure threshold value.
2. The method of claim 1, further comprising:
and when the correlation coefficient is smaller than the correlation coefficient threshold value and meets all the conditions in a first preset condition, judging that the completeness of the superconducting magnet can continuously support the vibration impact experiment.
3. The method of claim 1, further comprising:
and when the correlation coefficient is smaller than a correlation coefficient threshold value and meets all conditions in a second preset condition, judging that the completeness of the superconducting magnet cannot continuously support the vibration impact experiment.
4. The method as claimed in claim 1, wherein calculating the correlation coefficient between magnet magnetic induction, pole temperature and vacuum degree of the vacuum chamber based on the integrity parameters of the superconducting magnet comprises calculating the correlation coefficient according to the following formula:
wherein r (B, T, P) is a correlation coefficient between the magnetic induction of the magnet, the temperature of the magnetic pole, and the vacuum degree of the vacuum chamber, B is the magnetic induction of the magnet, T is the temperature of the magnetic pole, P is the vacuum degree of the vacuum chamber, cov is covariance, and Var is variance.
5. The method according to any one of claims 1 to 4, wherein the coefficient threshold is 0.7.
6. An apparatus for determining the functional integrity of a superconducting magnet in a vibro-impact experiment, the apparatus comprising:
the determination module is used for determining the integrity parameter of the superconducting magnet before the experiment and the current integrity parameter of the superconducting magnet; the integrity parameters comprise magnetic induction intensity of the magnet, magnetic pole temperature and vacuum degree of the vacuum cavity;
the calculation module is used for calculating correlation coefficients among the magnetic induction intensity of the magnet, the magnetic pole temperature and the vacuum degree of the vacuum cavity according to the integrity parameters of the superconducting magnet;
the judging module is used for judging that the completeness of the superconducting magnet can continuously support the vibration impact experiment when the correlation coefficient is larger than the correlation coefficient threshold value and meets any one of first preset conditions; the first preset condition comprises that the ratio of the current magnetic induction intensity of the magnet to the magnetic induction intensity of the magnet before the experiment is greater than a magnetic field threshold value, the ratio of the current magnetic pole temperature to the magnetic pole temperature before the experiment is greater than a temperature threshold value, and the ratio of the current vacuum degree of the vacuum cavity to the vacuum degree of the vacuum cavity before the experiment is greater than a pressure threshold value;
when the correlation coefficient is larger than a correlation coefficient threshold value and meets any one of second preset conditions, judging that the completeness of the superconducting magnet cannot continuously support the vibration impact experiment; the second preset condition comprises that the ratio of the current magnetic induction intensity of the magnet to the magnetic induction intensity of the magnet before the experiment is smaller than a magnetic field threshold, the ratio of the current magnetic pole temperature to the magnetic pole temperature before the experiment is smaller than a temperature threshold, and the ratio of the current vacuum degree of the vacuum cavity to the vacuum degree of the vacuum cavity before the experiment is smaller than a pressure threshold.
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| CN109839252A (en) * | 2017-11-28 | 2019-06-04 | 西安玖诚玖谊实业有限公司 | High-temperature superconducting magnetic levitation dynamic testing and control analysis system |
| CN210834071U (en) * | 2019-10-10 | 2020-06-23 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Superconducting magnet vibration impact test system |
| CN211741535U (en) * | 2019-12-04 | 2020-10-23 | 东部超导科技（苏州）有限公司 | Temperature impact detection device for high-temperature superconducting strip |
| CN113495236A (en) * | 2020-04-07 | 2021-10-12 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Superconducting magnet vibration test system with background magnetic field |
| CN113495237A (en) * | 2020-04-07 | 2021-10-12 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Dynamic superconducting magnet thermal load testing method with background magnetic field |
| CN111487572B (en) * | 2020-06-12 | 2020-10-27 | 华中科技大学 | Flat-top pulse high-intensity magnetic field generating device with high stability |
| CN112198835A (en) * | 2020-12-02 | 2021-01-08 | 江西联创光电超导应用有限公司 | Method and system for detecting operating data of high-temperature superconducting magnet |
| CN213902798U (en) * | 2020-12-22 | 2021-08-06 | 国网上海市电力公司 | Superconducting cable anti vibration performance detecting system |
| CN112763170A (en) * | 2020-12-22 | 2021-05-07 | 国网上海市电力公司 | System and method for detecting vibration resistance of superconducting cable |
-
2021
- 2021-11-19 CN CN202111400080.6A patent/CN114114104B/en active Active
- 2021-12-01 WO PCT/CN2021/134899 patent/WO2023087407A1/en unknown
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| CN114114104A (en) | 2022-03-01 |
| WO2023087407A1 (en) | 2023-05-25 |
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